Electric Heater Pattern Segmentation to Reduce Localized Heating
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Solution Overview
Problem
Existing electric heaters with plane heating elements often experience uneven temperature distribution and localized heating, making it difficult to control heating temperatures effectively.
Innovation Solution
The design incorporates a substrate with specific outer and inner pattern parts connected to electrodes, featuring parallel and series configurations, which reduces the path difference between the inner and outer circumference of bridges, minimizing localized heating and allowing for controlled heating temperatures by supplying current to either the outer or inner plane heating elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plane heating element is used, then heating area is increased, but localized heating and uneven temperature distribution occur
Solution Approach 1:
The heating element is divided into multiple track parts (first outer pattern part, second outer pattern part, inner pattern part) with different configurations. These segmented tracks are connected through bridge parts to form a distributed heating network that spreads heat generation across the entire heating element area, preventing localized overheating while maintaining large heating coverage.
Solution Approach 2:
Different track parts are designed with different shapes and connection patterns to create non-uniform current distribution. The outer pattern parts and inner pattern part have distinct geometries that generate heat at different rates, ensuring that areas prone to higher heat concentration generate less heat, thereby achieving uniform overall temperature distribution across the large heating area.
2Stability of the object's composition
If track parts are connected through bridge parts, then heating element continuity is maintained, but path difference between inner and outer circumference causes localized heating
Solution Approach 1:
The bridge parts are further segmented into multiple connection paths between track parts. By providing multiple parallel connection paths, the current is distributed more evenly through the bridges, reducing the path difference effect and minimizing localized heating at bridge locations while maintaining the continuity of the heating element.
Solution Approach 2:
The bridge parts are designed with three-dimensional configurations including vertical connections and inclined paths in addition to horizontal connections. This multi-dimensional routing equalizes the current path lengths from inner to outer circumference, preventing localized heating at bridge parts while maintaining structural continuity of the heating element.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces localized heating and allows for precise control of heating temperatures, enhancing the heating efficiency and uniformity of the electric heater.
Implementation Method 1
An electric heating apparatus is an apparatus provided for heating, and includes an electric heater using a Joule's heat generated as a current flows through a resistance wire or the like
Data Source
AI summary
An electric heater includes a substrate, a first outer pattern part disposed on one surface of the substrate and to connect with a pair of first electrodes, a second outer pattern part to connect with the pair of first electrodes in parallel with the first outer pattern part and to be spaced apart from the first outer pattern part, and an inner pattern part disposed on one surface of the substrate so as to be located such that the first outer pattern part and the second outer pattern part surround the inner pattern part, to be spaced apart from the first outer pattern part and the second outer pattern part, and to connect with a pair of second electrodes spaced apart from the pair of first electrodes.